//
//   Copyright (c) 2009 Bálint Jánvári
//       www.programmaticmagic.com
//  
//  Permission is hereby granted, free of charge, to any person
//  obtaining a copy of this software and associated documentation
//  files (the "Software"), to deal in the Software without
//  restriction, including without limitation the rights to use,
//  copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the
//  Software is furnished to do so, subject to the following
//  conditions:
//
//  The above copyright notice and this permission notice shall be
//  included in all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
//  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
//  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
//  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
//  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
//  OTHER DEALINGS IN THE SOFTWARE.

//
//  VectorView.m
//  ObjectiveMagic
//

#import "VectorView.h"
#import "ObjectiveMagic.h"

@implementation VectorView
@synthesize touchPosition;

- (id)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        // Initialization code
    }
    return self;
}

- (void)drawRect:(CGRect)rect
{
	if (touchPosition.x == touchPosition.y && touchPosition.x == 0) return;
	CGPoint bottom = CGPointMake(self.bounds.size.width / 2, self.bounds.size.height);
	CGContextRef c = UIGraphicsGetCurrentContext();
	CGContextMoveToPoint(c, bottom.x, bottom.y);
	CGContextAddLineToPoint(c, touchPosition.x, touchPosition.y);
	CGContextClosePath(c);
	CGContextSetStrokeColorWithColor(c, [UIColor blackColor].CGColor);
	CGContextStrokePath(c);
	
	CGVector v = CGVectorMakeWithPoints(touchPosition, bottom);
	CGFloat angle = CGVectorAtan2(v);
	[[NSString stringWithFormat:@"%f°", OMRadianToDegree(angle)] drawAtPoint:CGPointMake(20, 430) withFont:[UIFont systemFontOfSize:[UIFont systemFontSize]]];
}

- (void)setTouchPosition:(CGPoint)point
{
	touchPosition = point;
	[self setNeedsDisplay];
}

- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
{
	self.touchPosition = [[touches anyObject] locationInView:self];
}

- (void)touchesMoved:(NSSet*)touches withEvent:(UIEvent*)event
{
	self.touchPosition = [[touches anyObject] locationInView:self];
}

- (void)touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event
{
	self.touchPosition = CGPointZero;
}


- (void)dealloc {
    [super dealloc];
}


@end
